How My Images Are Dithered

#1

Post by surprisetalk » Wed, Jul 22, 2026, 1:00 PM UTC

How My Images Are Dithered
dead.garden

Re: How My Images Are Dithered

#2

Post by Retr0id » Sat, Jul 25, 2026, 1:04 PM UTC

I suppose it is a type of dithering, but really this is Halftoning

Re: How My Images Are Dithered

#3

Post by AndrewStephens » Sat, Jul 25, 2026, 1:24 PM UTC

Very nice results, I really like the way it looks like a printed page. Image processing is addictive - once you start playing around it is hard to stop.

Re: How My Images Are Dithered

#4

Post by ValdikSS » Sat, Jul 25, 2026, 1:32 PM UTC

??? This is halftoning, not dithering

Re: How My Images Are Dithered

#5

Post by ValdikSS » Sat, Jul 25, 2026, 1:33 PM UTC

ValdikSS wrote: post #4

??? This is halftoning, not dithering

>Is this even dithering?

>But if you care about the method this is not dithering.

> I looked it up, the translation in this case is, in fact, simply "half tones" :^)

Re: How My Images Are Dithered

#6

Post by meindnoch » Sat, Jul 25, 2026, 1:38 PM UTC

Every image should be dithered below 10 bits/component to prevent banding artifacts.

Re: How My Images Are Dithered

#7

Post by andai » Sat, Jul 25, 2026, 1:40 PM UTC

ValdikSS wrote: post #4

??? This is halftoning, not dithering

Re: How My Images Are Dithered

#8

Post by ValdikSS » Sat, Jul 25, 2026, 1:46 PM UTC

andai wrote: post #7

ValdikSS wrote: post #4

??? This is halftoning, not dithering

See also, Surface-stable fractal dithering: https://www.youtube.com/watch?v=EzjWBmhO_1E And the technical deep dive: https://www.youtube.com/watch?v=HPqGaIMVuLs

Thanks, that looks cool. This is dithering in principle, but using dynamic spot functions.

To learn more about halftones, I'd recommend PDF specification, pages 303-307.

https://opensource.adobe.com/dc-acrobat-sdk-docs/standards/p...

Re: How My Images Are Dithered

#9

Post by rahimnathwani » Sat, Jul 25, 2026, 1:48 PM UTC

If you're doing halftoning with the intent to get custom DTF (direct to film) prints for t shirts, you might find this tool helpful:

https://tools.encona.com/dtf

It aims to 'knock out' some areas of the image: make them transparent in the digital image so those areas are not part of the final film. This means less of the surface of the t shirt has film on it, allowing it to be breathable and flexible.

I got some DTF prints made before I knew you were meant to do this. The tutorials online required a lot of steps so I made the above for next time. Not tested for real yet.

Re: How My Images Are Dithered

#10

Post by xnx » Sat, Jul 25, 2026, 1:56 PM UTC

Title here is missing "How" as in "How My Images Are Dithered"